摘要
采用沉降实验、激光粒度分布、透射电镜等手段,研究PVPK17对Ag/ZnO纳米复合抗菌剂的解团聚的影响及机制,同时采用最小抑菌浓度对解团聚前后的抗菌性能进行表征。结果表明:经PVPK17解团聚后的Ag/ZnO纳米复合抗菌剂可在异丙醇中稳定悬浮6d以上,分散后的Ag/ZnO纳米复合抗菌剂的平均粒度可达51.3nm,当加入PVPK17的质量百分数为40%时达到最佳分散效果。用透射电镜观测表明,解团聚的Ag/ZnO纳米复合抗菌剂分散较好,在此基础上建立了PVPk17对Ag/ZnO纳米复合抗菌剂的解团聚模型。抗菌实验表明,分散后的Ag/ZnO纳米复合抗菌剂的MIC可达50mg/L,抗菌性能良好。
In this paper, a deaggregation technology and its mechanism were studied for the Ag/ZnO nanoeomposite antibacterial agent added with PVPK17 by sedimentation experiment, laser scattering particle size analysis and transmission electron microscopy （TEM）. The minimum inhibitory concentration of the fore-aft deaggregation Ag/ZnO nanocomposite antibacterial agent was tested. The results showed that the Ag/ZnO nanocomposite antibacterial agent in isopropanol could be stable suspension more than 6 days after deaggregation with PVPk17, the average particle size was smaller than 51.3 nm. The dispersion effect was the best when the mass % of PVPk17 was 40%. TEM results show that the Ag/ZnO nanocomposite antibacterial agent is kindly dispersed. Then, a model of deaggregation mechanism was built. The MIC ofAg/ZnO nanocomposite antibacterial agent was 50 mg/L after deaggregation, with good antibacterial property.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2009年第2期358-360,共3页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50572041)
山东省自然科技学基金(Y2007F64)
山东省教育厅基金(J06A02)
山东省科技攻关项目(2006GG2203014)
